Pump



Dec. 10, 1929. w. v. sElFERT l 1,739;095

De :.l l0, 1929. w. v. SEIFERT 1,739,095

PUMP

File-d June e, 1925 2 mets-snm 2 A INVENTOR. W V. Saffi/"f @gf-4 @i5 A TTORNEY.

Patented Dec. 10, 1929 W'LLIAM V. SVEXFERT, 0F DENVER, COLORADO PUMP Application filed June 6 This invention relates to pumps and its primary object resides in the provision of a Ysimple mechanical device for .raising water, voil or other liquids from wells and other "sources, in which the movement of a piston or other pressure-element is transmitted to theliquid by means'of a fiuid` agent.

A further ob] ect of the invention is to provide in a pump of the above described character, an agent which restrains the raised liquid from coming in contact with the working parts of the mechanism; another object is to provide a Vbody of fluid lubricant which 'while performing the function of the agent mentioned hereinbefore, also servesto lubricate the working parts ofthe pump. n

Still .another object of the invention resides .in providing a self-locking plug to close the upper end of the pump barrel and.

'20 further objects .will be'found in details of Vconstruction and a novel arrangement of parts hereinafter to be described with refer-V ence to the accompanying drawings.

y In the drawingsin the several views of which like vparts are similarly designated,

Figures 1 and 2 represent conjointly a cen- Y tral vertical section of the pump drawn to an enlarged scale;

Figure 3a section taken along the line 3 3 50 of F igure.2, looking in the direction of the arrows; Y

Figures t and 5 represent diagrammatic vertical sections of the pump showing the `position of its working parts when the reciprocating piston is at the end of its strokes; Figure 6 is an-enlarged sectional view of the lower portion of the self-locking Vplug of the piston barrel; u Figure 7 represents a perspective view of a portion of one of the floating dividing-rings which separate the fluid transmission agent from the liquid raised in the operation of the pump; and n Figure 8, a section taken along the line 8 8 of Figure 2, looking in the direction of the arrows. i liei'ierring more specifically to the drawings, 5 designates a cylindrical upright casingvclosed at its ends by heads 6 and 'A tubular pump barrel 8 axially coincident serial No. 35,414.

with the casiiw is fastened at its lower end in an internally screw-threaded flange of the lower head 7 and its upper end is similarly secured Yin a gland of the upper head 6 in connection with a delivery conduit 9.

The space between the barrel and the cas- 'ing divided by horizontal partitions 10 and 12 into a suction-chamber 13, a forcechamber 14e and a receiving-chamber 15.

rEhe annular chambers 13 and 14 are longi` tudinally divided by concentric cylindrical partitions 15 and'17 which are spaced at one end from theupper or lower walls of the chambers formed by the transverse partitions 10 and 12 and the bottom head 7 of the casing, to provide goose-necked channels 18 and 18a.

The inner partition of the lower chamber 13 is to this end screwed upon the before mentioned flange of the ,head 7 and is spaced from the lowersurface of the transverse partition 10, and the outer partition is .screwed upon a boss of the same transverse partition and is spaced from the bottom surface of the casing.

In the chamber 14, the inner cylindrical partition is fastened upon an exteriorly threaded boss at the upper side of the transverse partition 10 and is spaced from the partition 12 at the upper end of the chamber, and the outer cylindrical partition is screwed upon a boss at the lower surface of the partition 12 and spaced from the partition 10 at the bottom of the chamber.

The spaces of the chambers 13 and 14 eX- teriorly of the outer cylindrical walls of the goose-necked channels are connected by ports 19 formed in the transverse partition 10, the chambers 14 and 15 are similarly connected y ports 20 in the partition 12 and the lower head 7 of the casing has exteriorly of the inner dividing wall of the respective chamber, ports 21 for the admission of liquid from a source in which the pump is immersed.

The flow of liquid through the several ports is controlled by annular gravity valves 22, 23 and 24C which normally rest upon the partitions 10 and 12 and the head `7 in which the ports are formed.

The valves 22 and 24 have beveled surwith the lower ends of the outer dividing CTI walls of the respective chambers to close the entrances to the outer spaces of the same and the upward movement of the valve 23 in the receiving-chamber is limited by an annular stop 25 formed interiorly of the casing 5.

The pump barrel has immediately above the partition 10 and the lower head 7, ports 26 and 27 which admit a fluid passing through the channels of the chambers above and below said partition, at opposite sides of a piston or plunger 23 fitted for reciprocation in the barrel.

yllhe piston is preferably composed of a plurality of cup-shaped disks 29 of leather or other soft material. fitted upon a core 30 and held in frictional contact with the'wall of the pump barrel by alternately disposed metal rings 31.

A nut 32 is screwed upon the lower thread ed end of the core to press the disks and interposed rings together, and the plunger thus constructed is through the medium of a union 33 connected at the lower extremity of a rod 34 which passes through the delivery pipe 9 and is connected to a crank shaft, eccentric or other means to yeffect its longitudinal reciprocating motion.

The portion of the pump barrel above the piston is closed by a self-locking plug 35 ywhich provides a water tight division `between the part of the barrel within which works the reciprocating piston and the upper part of the barrel which is provided with ports 36 through which the liquid passes into the delivery conduit.

The plug consists of a body portion composed similarly to the above described piston, of alternately disposed leather cups 37 and metalrings 38 arranged upon a central tubular core 39 through which passes the piston rod 34. The cups are in water-tight contact with the interior surface of the barrel and the plug is held in place by a locking element which is fastened at the lower end of the core 39.

The locking element comprises a cylindrical keeper 40 provided with an annular chamber 41 around a central bore which is alined with the core of the body portion of the plug for the passage of the piston rod.

' rllhe annular chamber has in its outer wall two openings which register with a groove 42 in the wall of the pump barrel.

An expandible elementv preferably composed of two dogs 43 and interposed springs 44, best shown in Figure 8, extends through 1 the openings of the keeper into the groove of the piston barrel to automatically lock the plug in place, and a key-element is provided to unlock the plug by an .upward movement of the piston beyond the normal extent of its reciprocating motion.

The key-element consists of two or more bars 45 rigidly connected at their ends by rings 46 and 47. The bars'extend in the annular chamber of the keeper through vertical passages of the dogs and they have below the latter, inwardly projecting enlarged bits 48 the upper edges of which are beveled for engagement with the lower ends of the respective dogs when the keys are moved longitudinally in an upward direction.

The key-element is normally suspended by means of `the upper ring 46 from a shoulder on the keeper, and the lower ring 47 is spaced below the lower end of the keeper a sufficient distance to permit of the upward movement of the element to retract the dogs from lthe groove of the piston barrel.

Fastened at the upper end of the body portion of the plug is a stuliing box adapted to maintain a fluid-tight joint'about the reciprocating piston rod.

The box is composed of a. cylinder 49 screwed to the plug, a hollow nut 50 at the upper end of the cylinder through which the piston rod loosely passes, a compressible packing 51, and a coiled expansion spring 52 disposed between the packing and the nut.

ln assembling the parts of which the pump is composed, the plug is inserted into the open end of the barrel after the piston is in place therein by temporarily pressing the dogs 43 inwardly to permit of their entering the barrelnotwithstanding the expansive action of their springs. The element thus inserted, is pressed downwardly until the .dogs are brought into registerv with the groove 42 of the barrel when by expansion of their springs they are forced into the groove and lock the plug in place.. f V

In order to unlock the plug, the piston rod is disconnected from its driving mechanism and the piston is pulled upwardly to forcibly engage with the lower ring ofthe key element. rhe consequent upward movement of the bars 45 retracts the dogs from the groove as hereinbefore explained, and the plug is thus removed with the piston by .continuing the upward movement thereof.

Slidably fittedin the outer portions of the annular goose-n ecked channels of the cham-I bers 13 and 14 are floating dividing rings 53 and 54 which in the operation ofthe pump separate the raised liquid from the fluid transmission agent.

The rings are preferably constructed as shown in Figure 7, of a body 55 of suitable packing material such as leather, fastened between two annular plates 56, and yin order to limit their downward movement they are suspended from the upper walls of the respective chambers 'by chains 57.

The opera-tion of the pump will be best -un derstood by reference to Figures 4 and 5 of the drawings in which the horizontal shading 'denotes the liquid transmission agent which llG `in Figure el, the plunger occupies the spaces of the goose-neck channels and the piston barrel between the dividing members 53 and 54 and the upper and lower ends of the plunger.

When with the parts in the position shown moves upwardly, the valve 24 is lifted and the liquid in which the pump is immersed is drawn inwardly through the ports 2l in the bottom of the casing as indicated inFigure 5.

The valve closes the outer space of the chamber by engagement with the lower end of the dividing wall 1G, and the fluid transmission agent following the movement of the plunger causes the dividing member 54 to rise in the outer leg of the goose-necked chalincl i8.

The liquid entering through the ports 2l follows the dividing member and passes into the space below the same until the movement of the piston is reversed when as shown in Figure l the fluid transmission agent 58 in the lower chamber` forces the liquid out of the goose-necked channel and into the outer portion of the chamber 13 while the valve 2st is 'returned to its closed position.

The liquidrising in the lower chamber lifts the valve 22 to its position in which it closes the corresponding space of the chamber 14 by engagement with the lower end of the dividing wall 17 asshown in Figure 4, and enters the channel 1Sa of the chamber behind the dividing' ring 53 which follows the movement of the transmission agent 59 of the chamber 14 with the downwardly moving piston.

During the next upward stroke of the plunger while the fresh charge of liquid is drawn in through the ports 2l as before, the

fluid agent 59 above `the piston causes the liquid in the chamber 14 to move from the goose-necked channel 18a into the outer portion of the chamber and thence through the ports 2O into the receiving-chamber l5, it being understood that the displacement of the liquid closes the valve 22 and lifts the valve 23 as shown in Figure 5.

The liquid is discharged from the receiving-chamber into the delivery-conduit 9 through the ports 86. and it will thus be seen that by the reciprocating motion of the piston, liquid is drawn into the lower chamber and forced into the upper chamber during each upward stroke while the liquid drawn int-o the lower chamber is transferred to the middle chamber during each downward stroke and that the presence of the liquid transmission agents above and below the piston, permanently isolates the barrel from the parts of' the pump through which the liquid c passes.

l sistency, wear and friction of the moving of' the piston,

parts of the mechanism are reduced to the minimum.

What I claim and desire to secure by Letters Patent is:

l. A pump comprising a piston-barrel, a piston movable therein, a passage surrounding the barrel for the flow of liquid from a point of intake to a point of discharge, and a fluid agent in the barrel at a side of the piston and part of the barrel to transmit the movement of the piston to the liquid. Y

2. A pump comprising a piston-barrel, a piston movable therein, passages eXteriorly of the barrel for the flow of liquid from a point of intake to a point of discharge, and fluid agents in the barrel at of thev piston and parts of the passages in separated relation to the liquid and adapted to transmit the movements of the piston to the liquid.

3. A pump comprising a piston barrel, a suction-chamber having a valve-controlled intake for liquid, a pressure-chamber having a valve-controlled outlet, said chambers being connected by a port, a valve Controlling the flow of liquid from one chamber to the other, a piston in 'the barrel, channels connecting the chambers with the barrel at opposite sides and fluid agents transmitting the movements of the channels.

Ll. A pump comprising a piston barrel, a suction-chamber having a valve-controlled intake for liquid, a pressure-chamber having a valve-controlled outlet', said chambers` piston to liquid in said n opposite sides being connected by a port, a valve controllingV the flow of liquid from one chamber to the other, a piston in the barrel, goose-necked channels connecting the chambers with the barrel at opposite sides of the piston, and

fluid agents transmitting the movements of the piston to liquid in said channels.

5. A pump comprising a piston barrel, a suction-chamber having a valve-controlled intake for liquid, a pressure-chamber having a valve-controlled outlet, said chambers being connected by a port, a valve controlling the flow of liquid from one chamber to the other, a piston in the barrel, channels connecting the chambers with the barrel at opposite sides of the piston, fluid agents transmitting the movements of the piston to liquid in said channels, and movable dividing members in the channels separating said agents from the liquid.

6. A pump comprising a piston barrel, a piston movable therein, a passage for liquid from a point of intake to a point of discharge, a body of liquid in the passage, a channel surrounding the barrel connecting said passage with the barrel, and a fluid agent trans- .mitting the movement of the piston to the liquid in the channel.

7. A pump comprising a piston barrel, a piston movable therein, a passage concentric lSO with the barrel for liquid from a point of intake to a point of discharge, a body of liquid in the passage, a goose-necked channel connecting said passage with ,the barrel, and a fluid agent transmit-ting the movement of the piston to the liquid in the channel.

8. A pump comprising a piston barrel, a suction chamber having a valve-controlled intake, a pressure-chamber, and a receiving .chamber having an outlet, said chambers being connected by ports, a valve controlling the flow of liquid from the suction-chamber to the pressure-chamber, a valve controlling the flow of liquid from the pressure-chamber to the .receiving-chamber, channels connecting the suction-chamber 4and the pressurechamber with the barrel at opposite sides of the piston, vand fluid agents transmitting the movements of the piston to liquid in said channels.

9. A pump comprising a casing, a therewith coaxial piston barrel of smaller diameter ported to connect with the space in the casing exterior thereof, said space having a valve-controlled intake for liquid and a valvecontro-lled outlet for liquid, a piston movable in the barrel in substantially fluid-tight engagement with the walls thereof, and a fluid agent transmitting the movementv of the piston to liquid in said space.

l0. A pump comprising a casing, a therewith coaxial piston barrel of smaller diameter, ported to connect withthe space in the casing exterior thereof, said space being partitioned to providel a tortuous channel between its outer portion and the ports, and the space having in connection with its said outer portion a valve-controlled intake for liquid and a valve-controlled outlet for liquid, a piston movable in the barrel in substantially fluid-tight engagement with the walls thereof, and a fluid agent in the barrel and the channel to transmit the movement of the piston to liquid in the casing.

ll. A pump comprising a casing, a therewith coaxial piston barrel of smaller diameter ported to connect with the space in the casing exterior thereof, said space being partitioned to provide a goose-necked channel between its outer portion and the ports, and the space having in connection with its said outer portion a valve-controlled intake for liquid and a. valve-controlled outlet for liquid, a piston movable in the barrel in substantially fluid-tight engagement with the walls thereof, and a fluid agent in the barrel and the channel to transmit the movement of the piston to liquid in the casing.

l2. A pump comprising a casing, a rtherewith coaxial piston barrel of smaller diameter ported to connect with the space in the casing exterior thereof, said space being partitioned to provide a tortuous channel between its outer portion and the ports, and the space having in connection with its said outer portion a valve-controlled intake for'liquid and a valve-controlled outlet for liquid, a piston movable in the barrel, a fluid agent in the barrel and the channel to transmit the movement of the piston to liquid in the casing, and a movable dividing member in the channel' dividing the fluid agent from the liquid. I

13. A pump comprising a cylindrical casing, a therewith coaxial piston barrel of smaller diameter ported to connect with the space in the casing exterior thereof, a piston movable in the barrel in substantially fluidtight engagement with the walls thereof, cylindrical partitions providing in said space a goose-necked channel between its outer portion and the ports, the space having in its said outer portion, a valve-controlled intake for liquid and avalve-controlled outlet for liquid,

- and a fluid agent in the barrel and the channel to transmit the movement of the piston to liquid in the space.

la. A pump comprisinfl` ay casing, a piston barrel coaxial therewith, a partition dividing the space between the casing and the barrel into a suction-chamber and a pressure-chamber, said chambers having respectively a valve-controlled intake-opening 'and a valvecontrolled outlet opening, the partition having a valve-controlled port for the passage of liquid from one chamber to the other and the barrel having ports opening in the chambers, partitions in each chamber forming a channel between the respective barrel port and the respective valve-controlled opening, a pist-on movable in the barrel, and fluid agents in the barrel at opposite sides of the piston to transmitI the movement of the piston to liquid in the channels.

l5. A pump comprising a casing, a piston barrel coaxial therewith, a partition dividing the space between the casing and the barrel into a suction-chamber and a pressure-chamber said chambers having respectively a valve-controlled intake opening and a valvecentrolled outlet opening, the partition having a valve-controlled Vport for the passage of liquid from one chamber to the other and the barrel having ports opening in the chambers, partitions in each chamber forming a goosenecked channel between the respective barrelport ant `the respective valve-controlled opening, a piston movable in the barrel, and fluid agents in the barrel at opposite sides of the piston to transmit the movement of the piston to liquid in the channels.

16. A pump comprising a casing, a pistonbarrel coaxial therewith, a partition dividing the space between the casing and the barrel into a suction-chamber and a pressurechamber said chambers having respectively a. valve-controlled intake opening and a valvecontrolled outlet opening, the partion having a valve-controlled port for the passage of liquid from one chamber to the other and the barrel having ports opening in the chambers, partitions in each chamber forming a channel between the respective barrel port and the respective valve-controlled opening, a piston movable in the barrel, fluid agents in the barrel at opposite sides of the piston to transmit the movement ot Idie piston to liquid in the channels, and rings movable in the channels to separate the respective agents from the liquid.

1T. A pump comprisin a casing, a pistonbarrel coaxial therewith, a partition dividing the space between the casing and the bard rel into a suction-chamber and a pressurechamber said Chambers having respectively a valve-controlled intake opening and a valvecontrolled outlet opening, the partition having a valve-controlled port for the passage of liquid from one chamber to the other and the barrel having ports opening in the chambers7 partitions in each chamber forming a channel between the respective barrel port and the respective valve-controlled opening, a piston movable in the barrel, fluid agents in the barrel at opposite sides of the piston to transmit the movement of the piston to liquid in the channels, and movably suspended rings in the channels to separate the respective agents from the liquid.

18. A pump comprising a casing, a piston barrel coaxial therewith, partitions dividing the space between the barrel and the casing into a suction-chamber, a pressure-chamber and a receiving-chamber, the suction chamber having a valle-controlled intake port, the partitions having valve-controlled ports for the ow of liquid from one chamber to another, and the piston-barrel having ports opening in the chambers, partitions in the suction-chamber and the pressure-chamber, forming channels between the respective intake port and outlet port and the respective ports of the barrel, a piston movable in the piston-barrel, luid agents in the barrel at opposite sides of the piston to transmit the movement of the piston to liquid in the channels, and a plug in the piston barrel between the piston and the port of the barrel opening in the receiving chamber.

19. A pump comprising a casing having an inlet and outlet, a piston barrel in the oasing having a port in Communication With said outlet, a piston in the barrel to eect the movement of liquid in the casing, a rod for the piston, and a self-locking plug on the rod to close the upper end of the piston barrel, the plug having separate expansion members and spring means abutting against the members to push same apart.

in testimony whereof l have atliXed my signature.

VILLIAM V. SEIFERT. 

